Divided filter



Dec. 5, 1933. w. LEATHERS 1,937,765.

DIVIDED FILTER Filed D60. 12, 1930 INVENTOR.

Patented Dec. 5, .1933

DIVIDED FILTER Ward Leathers, Haworth, N. .L, assignor to The QuadrexCorporation, necticut a corporation of Con- Application December 12,1930 Serial No. 501,875

3 Claims.

The object of my invention is to produce a' vacuum-cleaner filter ofsimple and inexpensive form,- primarily for lighter duty vacuum-cleanerswherein the dirt is deposited in a receptacle. I obtained this object bythe use of a filter material in substantially cylindrical form, at leastmaintained so by the pressure of the air within and by dividing it by apiece of fabric in such manner that the dirt-laden air will first becarried to the top of the filter where its direction will be reversed,in order to carry the final filtering process in the direction ofgravity, so that the dirt may be properly disposed.

In order to set forth my invention in such form that all familiar withthese arts may understand, I have prepared the following specification,and appended drawing thereto, of which- Figure I is a partially brokenside view of a handle-supported-motor-type cleaner.

Figure II is a cross-section of the filter.

Figure III is a side view of the filter applied to a conventionalcleaner.

Figure IV is a detail of the air inlet.

Figure V is a detail modification.

In Figure I, 1 is a nozzle-housing shown integral with the blower-casing2. The motorhousing 3, shown in dotted lines, is surrounded by a casing4, permitting of the upward movement of the dirt-laden air to the filter5. 4 is provided with cross-members 6, which support the end of thefilter. A handle 7 may be sup ported, if preferred, both in the end ofthe motorhousing 3 and by the cross members 6. The cross-members 6,preferably of stamped sheet metal, are designed to hold tightly in anysuitable manner, both the outer fabric of the filter, and the innerseparator 12 (as shown in Figure II). Openirgs in these members 6,which, may be joined together as by rivets, or any other suitablemanner, provide for the movement of the dirt-laden air into the-upperpassage of the filter, and of the dirt from the lower passage of saidfilter. The cylindrical casing of the filter 5 may be provided with sewngores, as at 8, for the purpose of lessening its diameter at-its pointof attachment 9 with the handle I. It may be attached in any suitablemanner, as by tying, and covering with a ferrule.

In Figure II, which is a cross-section of the filter 5,'taken in anytypical location, an outer sleeve .10 of fabric, or other suitablefilter material, has first joined to it at 11, as by sewing, a crosspiece 01 fabric or separator 12. The other edge of 12, and the two edgesof the piece 10 may be joined by a single seem at 13. The seam may belocated on the inside, if desired, by turning the sleeve, after sewing.The filter is now divided into two chambers, an upper chamber 14,

through which the dirt-laden air is carried upward to the top edge ofthe bafile or separator 12,

which is located a reasonable distance from the top of the filter. Theremaining dirt-laden air then passes to the chamber .15, for itsdownward movement in the direction of gravity, toward the dirtreceptacle 16 (Figure I), said receptacle is a complete enclosure (seeFigure V) made of any suitable material,- such as sheet metal, or moldedmaterial provided at the top with an opening of such shape as will bestcover in air-tight manner the largest possible opening in the bottom ofchamber 15.

It is now evident that approximately half of the dirt-laden air, both inspeed and volume, will pass to the chamber 15, and the same issufficient to carry the dirt from 14 to 15 and permit its 7 continuousmovement, aided by gravity, toward the dirt receptacle. The dirtreceptacle may be latched into place by any suitable latch, or othermeans, and is similar to those shown in my copending patentapplications.

' In Figure III, I have shown my divided filter applied to aconventional type of vacuum-cleaner. The handle 7 is joined to a hollowyoke 17, which receives the dirt-laden air from the blower '18.

17 is provided with a point of attachment 19 for r a fabric sleeve 20,which is sewn to the filter 5 and passed through a suitable opening inthe cross-members 6.

In Figure IV, I have illustrated a means of applying my divided filterto a conventional type vacuum-cleaner, without using the hollow yoke 17of Figure III, but by joining the handle 7 to a conventional yoke 21,and extending the tube 20 in the form of a flexible attachment 22 to amay be applied in many and devious forms of design without departingfrom the spirit thereof.

I claim: 1. In a vacuum-cleaner, a motor-blower, a handle with nofunctional air passage therein,

said handle surrounded by a filter sleeve, a separator in said filteringsleeve joined to the sides thereof dividing it into two chambers withthe handle passing through one of them, said chambers being incommunication at the top of the separator, and a dirt receptacle inoperable-engagement with the bottom opening of one of said chambers.

2. In a vacuum-cleaner, a motor-blower, a handle with no functional airpassage therein, disposed within a filtering sleeve, a separator in saidfiltering sleeve joined to the sides thereof, on one side of the handle,dividing the sleeve into two chambers, said chambers communicating atthe top edge of the separator, one chamber adapted at its bottom end toreceive the dirtladen air from the blower and the other adapted oversubstantially its entire bottom end to deposit dirt in an air-tightreceptacle detachably connected therewith.

3. In a vacuum cleaner, the combination of a ceiving the falling dirt.

motor-blower having a casing, a handle with no functional air passagetherein, said handle surrounded by a filter sleeve-closed and joined tosaid handle at the top, a dirt receptacle detachably associated with themotor blower casing,

said sleeve having a duct adapted to receive dirt- WARD LEATHERS.

